<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="jquery-3.6.0.min.js"></script>
</head>
<body>
<div id="contentDiv"></div>
<div id="deleteResult"></div>
<input type="button" value="提交数据" onclick="getData()"><br>
<input type="button" value="删除数据" onclick="deleteData()"><br>

<script>
    function deleteData()
    {
        $.ajax(
            {
                url:'http://localhost:8081/book/99',
                type:'delete',
                success:function (msg)
                {
                    $("#deleteResult").html(msg);
                },

            }
        )
    }

    function getData()
    {
        $.ajax(
            {
                url:'http://localhost:8081/book/',
                type:'post',
                crossDomain: true,
                data:{name:'三国'},
                success:function (msg)
                {
                    $("#contentDiv").html(msg);
                },
                error:function (e){
                    console.log(e)
                }
            }
        )
    }
</script>
</body>
</html>